"Hate" is perhaps a bit strong. But, nevertheless, I do think it important to point out to those ignorant selfish people who avoid recommended vaccines for themselves and/or their children that, yes, while they have - and should have - the right to do so, they are nevertheless doing wrong in that their actions and omissions are likely to hurt others (amongst whom, not least, their own children).
Anti-vaxxers, that is, are immoral, bad people. Ignorance is no excuse for such selfishness. Nor is the plain stupidity they often manifest in vapid attempts at self-justification (such as in some of this thread for example).
We have to live with bad people amongst us, sadly. Murderers, rapists, thieves, racists, misogynists ... and anti-vaxxers. OK, some are worse than others. They're all immoral though.
This needs saying, even if "hate" overdoes matters.